Table 1. Prevalence of analgesic use according to the sociodemographic and health-related characteristics of the sample.

PNAUM, 2014 (n = 41,433).

		Sample	Prevalence of analgesic use
		%	%a	95% CI	Pb
Total		-	22.8	21.4–24.2	-
Gender	Male	47.2	17.9	16.5–19.3	<0.001
	Female	52.8	27.2	25.6–28.9
Age (years)	0 to 9	13.7	13.9	12.4–15.6	<0.001
	10 to 19	16.0	15.7	13.6–17.9
	20 to 59	57.2	25.1	23.5–26.8
	≥ 60	13.2	30.0	28.8–32.4
Education (years completed)	never studied	21.1	20.9	19.2–22.8	<0.001
	1 to 8	45.6	21.0	19.5–22.7
	> 8	33.3	26.5	24.5–28.5
Economic classc	A/B	22.3	23.0	20.8–25.3	0.413
	C	55.3	23.2	21.6–24.8
	D/E	22.3	21.8	20.0–23.7
Chronic diseases	None	69.1	17.1	15.9–18.4	<0.001
	1	17.0	28.5	26.3–30.8
	2	7.2	36.8	34.1–39.7
	≥ 3	6.6	52.6	49.8–55.4
Number of drugs in use (excluding analgesics)	None	58.6	16.0	14.7–17.4	<0.001
	1	14.8	26.6	24.6–28.7
	2	13.0	27.5	25.2–29.8
	3 to 4	9.2	39.2	36.5–42.1
	≥ 5	4.3	52.8	49.3–56.3
Health insurance coverage	Yes	22.0	26.1	23.9–28.3	<0.001
	No	78.0	21.9	20.4–23.4
Emergency visitsd	Yes	14.8	42.4	40.2–44.7	<0.001
	No	85.2	19.4	18.1–20.8
Hospitalizations d	Yes	5.9	39.9	37.1–42.8	<0.001
	No	94.1	21.8	20.4–23.2

^a Percentages adjusted according to sample weights and according to post-stratification (according to age and gender).

^b Chi-square test for independence.

^c According to the Brazilian Economic Classification Criteria 2013 (CCEB 2013) of the Brazilian Association of Research Companies (ABEP). Available at: http://www.abep.org

^d within the previous 12 months

CI: confidence interval